ID 1.12.98.2 DE 5,10-methenyltetrahydromethanopterin hydrogenase. AN H(2)-dependent methylene-H(4)MPT dehydrogenase. AN H(2)-forming N(5),N(10)-methylenetetrahydromethanopterin dehydrogenase. AN Hydrogen:N(5),N(10)-methenyltetrahydromethanopterin oxidoreductase. AN N(5),N(10)-methenyltetrahydromethanopterin hydrogenase. AN Nonmetal hydrogenase. CA H(2) + 5,10-methenyltetrahydromethanopterin = H(+) + 5,10- CA methylenetetrahydromethanopterin. CC -!- Does not catalyze the reduction of artificial dyes. CC -!- Does not by itself catalyze a H(2)/H(+) exchange reaction. CC -!- Does not contain nickel or iron-sulfur clusters. CC -!- Formerly EC 1.12.99.4. DR Q58194, HMD_METJA ; Q02394, HMD_METKA ; A4G064, HMD_METM5 ; DR A6VIB6, HMD_METM7 ; Q6M0Z1, HMD_METMP ; Q50758, HMD_METTF ; DR O27211, HMD_METTH ; Q50759, HMD_METTL ; P32440, HMD_METTM ; DR P81221, HMD_METTW ; Q50840, HMD_METVO ; A6URB0, HMD_METVS ; DR P32441, HMD_METWO ; //